package com.sfac.springboot.modules.common.controller;

import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.view.RedirectView;

import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

/**
 * @Description MyBasicErrorController
 * @Author JiangHu
 * @Date 2022/8/25 15:13
 */
@Controller
@RequestMapping("${server.error.path:${error.path:/error}}")
public class MyBasicErrorController implements ErrorController {

	@RequestMapping(produces = MediaType.TEXT_HTML_VALUE)
	public ModelAndView errorHtml(HttpServletRequest request, HttpServletResponse response) {
		HttpStatus status = getStatus(request);
		if (status.value() == 404) {
			return new ModelAndView("redirect:/common/404");
		} else {
			return new ModelAndView("redirect:/common/500");
		}
	}

	@RequestMapping
	public ResponseEntity<Map<String, Object>> error(HttpServletRequest request) {
		Map<String, Object> body = new HashMap<>();
		HttpStatus status = getStatus(request);
		if (status.value() == 404) {
			body.put("status", 404);
			body.put("message", "Not Found");
			body.put("data", "/common/404");
		} else {
			body.put("status", 500);
			body.put("message", "内部错误");
			body.put("data", "/common/500");
		}
		return new ResponseEntity<>(body, status);
	}

	protected HttpStatus getStatus(HttpServletRequest request) {
		Integer statusCode = (Integer) request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);
		if (statusCode == null) {
			return HttpStatus.INTERNAL_SERVER_ERROR;
		}
		try {
			return HttpStatus.valueOf(statusCode);
		}
		catch (Exception ex) {
			return HttpStatus.INTERNAL_SERVER_ERROR;
		}
	}
}
